A butterfly net or magic butterfly net is helpful when catching implings. Players can catch them without a net, but only if they are 10 levels above the requirement for catching an impling (for example, catching ninja implings without a net will require level 84 in Hunter instead of the normal 74). If a player has an empty impling jar in their inventory, the impling caught will be placed into the jar. Otherwise, the impling caught will be looted immediately. Implings within Puro-Puro can only be caught when the player is carrying empty impling jars.

Three jars can be obtained from Elnock Inquisitor in Puro-Puro at the cost of one of type of jarred impling. This can be a good use for young and baby implings, given their low value loot. They can also be generated with a jar generator (33 jars from a generator, one at a time) or purchased from Elnock's shop for one coin each (ten in stock). Elnock will store one butterfly net, one imp repellent, and a maximum of 127 impling jars.

Implings have the ability to fly over any body of water or lava, but not over obstacles that can be labelled with a line on the minimap. They will occasionally teleport to a nearby area. They can sometimes spawn inside some thick walls, for example the wall east of Taverley that runs north to south. This would make them impossible to catch, and potentially be considered a glitch if not for their ability to teleport. They can be found even in some isolated areas, such as Runecrafting altars.

A wandering impling roams around the large wheat field in Zanaris. He cannot be caught, but he introduces players to the Impetuous Impulses minigame in an eccentric manner and will show players the location of the two other portals outside of Puro-Puro. Another visually identical impling, Immenizz, can be found near the centre of Puro-Puro. He will explain briefly why implings might be hiding what humans may want. Fairy Aeryka is found near the wandering impling, and she will also give her version of what implings are, and what is in Puro-Puro.

Unlike most other hunter creatures, players can use the spells Bind, Snare, and Entangle to keep an impling from moving further away. This can be useful when in Puro-Puro, or to keep an impling from flying over a body of water.

When an impling spawns in the world, the sound that plays is a high-pitched "beckon whistle" plus a subtle rattling that lasts about 3 seconds.